[ uhn-bound ]
/ ʌnˈbaʊnd /


simple past tense and past participle of unbind.


not bound, as a book.
free; not attached, as by a chemical bond: unbound electrons.

Origin of unbound

before 900; (adj.) Middle English unbounde, unbunden, Old English unbunden; see un-1, bound1

Can be confused

unbound unbounded

Definition for unbound (2 of 2)


[ uhn-bahynd ]
/ ʌnˈbaɪnd /

verb (used with object), un·bound, un·bind·ing.

to release from bonds or restraint, as a prisoner; free.
to unfasten or loose, as a bond or tie.

Origin of unbind

before 950; Middle English unbinden, Old English unbindan; cognate with German entbinden. See un-2, bind
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for unbound

British Dictionary definitions for unbound (1 of 2)


/ (ʌnˈbaʊnd) /


the past tense and past participle of unbind


(of a book) not bound within a cover
not restrained or tied down by bonds
(of a morpheme) able to form a word by itself; free

British Dictionary definitions for unbound (2 of 2)


/ (ʌnˈbaɪnd) /

verb -binds, -binding or -bound (tr)

to set free from restraining bonds or chains; release
to unfasten or make loose (a bond, tie, etc)
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012